Studying the properties of ttbar events containing extra boson with the ATLAS experiment at the Large Hadron Collider

利用大型强子对撞机的 ATLAS 实验研究包含额外玻色子的 ttbar 事件的特性

• 批准号: 2290939
• 金额: --
• 依托单位: University of Glasgow
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2290939
• 关键词: Studying; properties; ttbar; events; containing

This studentship focuses on measuring top quark properties, such as spin correlation, in recently-observed top pair (tt) states with either an additional Z, photon, or Higgs boson, in order to probe the couplings between these bosons and the top quark. Understanding the interaction between the Higgs boson and the top is of crucial importance for our understanding of how mass is generated and probing the interactions between the top quark and the Z/photon allows us to probe the interplay between Quantum Chromo Dynamics (QCD) and Electro Weak (EW) physics at nature's highest scales. Initially, the focus will be on measuring spin correlation in ttZ and ttGamma events using the full Run2 dataset collected by the ATLAS detector. Future work will then prepare to make similar measurements during Run3 in ttH events, where statistics will be more favourable. All of these measurements will be powerful tools for searching for, or in the absence of signal constraining, physics Beyond Standard Model (BSM).

这个学生奖学金的重点是测量顶夸克的性质，如自旋相关性，在最近观察到的顶对（tt）状态与任何一个额外的Z，光子，或希格斯玻色子，以探测这些玻色子和顶夸克之间的耦合。理解希格斯玻色子和顶之间的相互作用对于我们理解质量是如何产生的至关重要，探测顶夸克和Z/光子之间的相互作用使我们能够探测自然界最高尺度上量子染色体动力学（QCD）和电弱（EW）物理之间的相互作用。最初，重点将是使用ATLAS探测器收集的完整Run 2数据集测量ttZ和ttGamma事件中的自旋相关性。然后，未来的工作将准备在ttH事件的运行3期间进行类似的测量，其中统计数据将更有利。所有这些测量都将成为寻找或在没有信号约束的情况下寻找超越标准模型（BSM）的物理学的强大工具。